diff --git a/src/error.rs b/src/error.rs
index 6ba9b2e..c0360c5 100644
--- a/src/error.rs
+++ b/src/error.rs
@@ -90,6 +90,13 @@ impl fmt::Display for Error {
     }
 }
 
+impl fmt::Debug for Error {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        self.fmt(f);
+        Ok(())
+    }
+}
+
 impl From<std::io::Error> for Error {
     fn from(error: std::io::Error) -> Self {
         Error {
diff --git a/src/http/parser.rs b/src/http/parser.rs
index c80aab2..c7a5818 100644
--- a/src/http/parser.rs
+++ b/src/http/parser.rs
@@ -324,7 +324,10 @@ mod tests {
         let mut parser = super::Parser::new_request_parser(request.as_bytes());
         match parser.parse() {
             Ok(_v) => panic!("should fail"),
-            Err(e) => assert_eq!("invalid character at position 13", e),
+            Err(e) => assert_eq!(
+                "unable to parse http request: invalid character at position 13",
+                e.to_string()
+            ),
         }
     }
 
@@ -334,7 +337,10 @@ mod tests {
         let mut parser = super::Parser::new_request_parser(request.as_bytes());
         match parser.parse() {
             Ok(_v) => panic!("should fail"),
-            Err(e) => assert_eq!("input too short", e),
+            Err(e) => assert_eq!(
+                "unable to parse http request: input too short",
+                e.to_string()
+            ),
         }
     }